DE102020125120A1 - Drive device for moving a wing - Google Patents

Abstract

The invention relates to a drive device (1) for moving a leaf, in particular a door leaf or a window leaf, with an electric machine (6) comprising one, in particular single, stator (36), one, in particular single, rotatable about a machine axis (X1). Rotor (37) and a plurality of coils (41) for forming a magnetic flux, the stator (36) having a stator base (38), in particular a plate-shaped one. The electrical machine (6) is designed as an axial flow machine. A circuit board (44) is arranged in a space between the stator base (38) and the rotor (37), at least one, in particular each, of the coils (41) being electrically connected to the circuit board (44).

Description

The invention relates to a drive device for moving a leaf, in particular a door leaf or a window leaf, having the features of the preamble of claim 1.

The invention can be used in a drive device for moving a sash, a sash being understood in particular as a door or window sash. The movable part of a door is referred to as a door leaf, for which the term door leaf is also common.

Such drive devices for moving a wing are known.

Such drive devices are typically provided directly on the leaf to be moved or on a door frame or a window frame. The space available is very limited, particularly when mounting on the door frame or the window frame. In particular, however, a compact design of the drive device is also preferred when it is mounted on the wing.

Against this background, the task is to enable a compact configuration of the drive device.

The object is achieved by a drive device with the features of claim 1. Advantageous developments of the drive device are specified in the dependent claims, the description and in the figures. Features and details that are described in connection with the drive device according to the invention also apply in connection with the method according to the invention and/or the use according to the invention and vice versa. The features mentioned in the description and in the claims can each be essential to the invention individually or in combination. The description additionally characterizes and specifies the invention, in particular in connection with the figures.

A drive device for moving a sash, in particular a door sash or a window sash, is particularly preferably specified. The drive device has an electrical machine comprising one, in particular single, stator, one, in particular single, rotor rotatable about a machine axis and a plurality of coils for forming a magnetic flux, the stator having a, in particular plate-shaped, stator base. It can be particularly preferred that the electrical machine is designed as an axial flow machine, with a circuit board being arranged in a space between the stator base and the rotor, with at least one, in particular each coil, being electrically connected to the circuit board.

The concept of axes, in particular as in the case of wing axis, output axis, machine axis, axis of rotation, means virtual axes which are fundamentally not limited in their extent.

The machine axis means the axis of rotation around which the rotor of the axial flow machine rotates.

The axial flow machine can be designed as a motor and/or generator. As a motor, the axial flow machine can generate a rotational movement, in particular a torque, from electrical energy. As a generator, the axial flow machine can generate electrical energy from a rotary movement, in particular from a torque.

In the axial flux machine, the magnetic flux is mainly formed parallel to the machine axis of the axial flux machine. The axial flow machine has a small overall axial length compared to other machine types. The axial overall length means an overall length in a direction parallel to the machine axis. The use of an axial flow machine therefore enables the dimensions of the axial flow machine to be reduced in the axial direction. This allows a compact design of a drive module to be made possible. In particular, the axial flow machine can be a brushless direct current machine, in particular a so-called BLDC machine. Such a machine is constructed like a three-phase synchronous machine with excitation by permanent magnets.

In particular, the stator can have 7 to 16, particularly preferably 10 to 14 coils, with the coil or coils of the stator being arranged in such a way that a magnetic flux can be generated in a direction parallel to the machine axis through the coil or coils.

The term coil means an electrical conductor with at least one winding. The electrical conductor can be embodied as an insulated wire and/or insulated strip, in particular by means of a coating, preferably by means of an insulating lacquer. For this purpose, the conductor can have an insulating coating, in particular an insulating varnish. In particular, the coil can be designed as a cast coil, with individual wicks ments of the coil are electrically insulated from one another by means of a potting material.

According to the invention, a circuit board is a plate-shaped, in particular populated, element for conducting electrical energy. The circuit board can be designed as a printed circuit board. The terms are used synonymously below. The circuit board can comprise several layers and/or have plastic and/or be flexible. In particular, the circuit board can be designed as a solid aluminum circuit board. This configuration is advantageous in terms of good heat conduction properties.

In particular, the coil can be soldered to the circuit board. In particular, the printed circuit board can extend at least partially over an installation space that is delimited by a lateral surface of the stator that is extended in the axial direction of the axial flux machine and/or by a lateral surface of the rotor that is extended in the axial direction of the axial flux machine.

It can be preferred that the circuit board is arranged parallel to the stator base.

It may be preferable for the stator to have one, in particular plate-shaped, stator base and a plurality of stator teeth protruding from the stator base in the axial direction of the axial flux machine, with the circuit board being arranged in a first plane, in particular parallel to the stator base, with the first plane being in a gap between the stator teeth and the rotor. It can also be preferred that the circuit board rests on the stator teeth.

In particular, the circuit board can be arranged in an air gap between the stator and the rotor. With this configuration, the circuit board advantageously has an additional function and can act as a spacer between the stator and the rotor. This configuration is advantageous with regard to further tree savings in the axial direction.

In particular, the stator teeth can protrude from a common surface of the stator base. In particular, the stator base can be connected to at least one, in particular each, stator tooth in a form-fitting and/or force-fitting and/or cohesive manner or can be formed in one piece. In particular, the stator can include the stator base, which has a base section, in particular a plate-shaped base section, and a plurality of stator teeth protruding from a common surface of the base section, in particular in the axial direction of the axial flux machine. In particular, at least one coil can be wound directly or indirectly around at least one, in particular each, stator tooth.

It can be preferred that the stator has a plurality of stator teeth protruding from the stator base in the axial direction of the axial flux machine, with the circuit board being arranged in a second plane, in particular parallel to the stator base, with the second plane being formed by at least one, in particular each stator tooth, of the Stator is broken.

This configuration is advantageous with regard to further tree savings in the axial direction.

It can be preferred that the circuit board has one or more openings, in particular the number of openings corresponding to the number of stator teeth, through which the stator teeth pass.
in particular, the shape of the respective openings can correspond to the surface of the respective teeth parallel to the circuit board.
In particular, the circuit board can include a single opening for several or all of the teeth.

In particular, the rotor can include at least one permanent magnet, with the permanent magnet being arranged along a virtual circle around the machine axis and spanning a first angular range. In particular, the stator can comprise a stator base with at least one stator tooth protruding from the stator base, in particular in the axial direction of the axial flux machine, the stator tooth being arranged along a virtual circle around the machine axis and spanning a second angular range, the ratio of the first angular range being a dividend to the second angular range is in the range from 1.1 to 1.6, preferably in the range from 1.2 to 1.5, particularly preferably in the range from 1.3 to 1.4. If there are several stator teeth and/or permanent magnets, each stator tooth can have the above-mentioned ratio to each permanent magnet. The stator tooth and the permanent magnet span the respective angular range in that they are arranged along the respective virtual circle around the machine axis and extend over part of the 360° of the virtual circle.

Alternatively or cumulatively, with multiple permanent magnets and/or stator teeth, the ratio of the first summed angular range as a dividend to the second summed angular range can be in a range from 1.3 to 1.9 or even from 1.5 to 1.8, with the first summed angular range from the sum of the first angular ranges of the individual permanent magnets and the second summed angular range is formed from the sum of the second angular ranges of the individual stator teeth.

The term circle around the machine axis means that the machine axis forms the center of the circle.

In particular, at least one, in particular each, permanent magnet can be designed in the form of a plate. In particular, the rotor can have a rotor plate, in particular a rotor disk. Furthermore, at least one, in particular each, permanent magnet can protrude from the rotor plate of the rotor in the axial direction of the axial flow machine, in particular in the direction of the stator. In particular, the rotor plate can have one or more indentations, in particular a number of indentations corresponding to the number of permanent magnets, with a permanent magnet lying in each indentation. In particular, the shape of the indentation, in particular each indentation, can correspond to the shape of the inlaid permanent magnet. This serves to secure the permanent magnets on the rotor, particularly on the rotor plate.

In particular, a surface of the stator tooth running parallel to the stator base, in particular of each stator tooth, can be designed in such a way that the surface widens in the radial direction of the stator, starting from the machine axis. Alternatively or cumulatively, a surface of the permanent magnet running parallel to the stator base, in particular of each permanent magnet, can be designed in such a way that the surface widens in the radial direction of the rotor, starting from the machine axis. In this way, the specified ratio of the first angular range as a dividend to the second angular range can be kept constant along the radial course of the stator. In particular, the surface of the stator tooth running parallel to the stator base, in particular of each stator tooth, can remain constant along the axial course of the stator tooth.

It can be preferred that at least one coil, in particular each coil, is integrated in or on the circuit board, in particular in the material of the circuit board.

It can be preferred that the stator has a stator base, in particular a plate-shaped one, and a bearing mount for accommodating a roller bearing or a plain bearing, with a roller bearing or a plain bearing being accommodated in or on the bearing mount. In this case, the roller bearing or the plain bearing can reach through a bearing breakthrough of the board.

This configuration is advantageous with regard to further tree savings in the axial direction.

In particular, the bearing receptacle can have a bearing support surface, in particular an annular bearing surface, which is connected to the stator base in a form-fitting and/or force-fitting and/or material-to-material manner or is formed in one piece with the stator base.

The bearing support surface refers to a surface on or against which the bearing can rest.

In particular, the bearing mount can be cylindrical, in particular hollow-cylindrical. In particular, the bearing mount can be connected to the stator base in a form-fitting and/or force-fitting and/or material-to-material manner or can be formed in one piece with the stator base.

In particular, the stator can have a fixed bolt, the bolt being connected to the stator in a form-fitting and/or force-fitting and/or cohesive manner or being formed in one piece and comprising the bearing mount. The bolt can also reach through the bearing opening of the circuit board.

In particular, the stator can be designed as a sintered body or cast part. In particular, the stator can also be milled after sintering or casting.

In particular, the stator can be formed from a powdery, in particular magnetically optimized, material. In particular, each powder grain can be provided with an insulating coating. In particular, the stator can be made from a material that suppresses the eddy currents, preferably from pressed iron powder. In particular, the individual iron powder grains can be provided with an electrically insulating coating. In particular, the stator can be made from a thin metal sheet. In particular, the metal sheet can be wound up as a spiral. Considered individually or in a suitable combination, these refinements are advantageous with regard to at least the reduction of eddy currents.

In particular, the stator can contain nickel and/or cobalt. In particular, the stator can be made of magnetic iron with proportions of nickel and/or proportions of cobalt.

It can be preferred that at least one of the coils, in particular each coil, is wound directly or indirectly around one of the stator teeth. More preferably it can be that at least one of the coils is wound around a tooth jacket, the tooth jacket at least partially surrounding the stator tooth. It can also be preferred that the tooth casing is fixed to the circuit board and/or to the stator tooth and/or to the stator base in a form-fitting and/or force-fitting and/or cohesive manner.

In particular, the tooth casing can have one or more projections, which engage in one or more recesses in the circuit board and/or the stator tooth and/or the stator base, in particular by means of at least one press-fit connection.

In particular, at least one of the stator teeth, in particular each stator tooth, can have an in particular electrically insulating tooth jacket, the stator having a plurality of coils and at least one of the coils, in particular each coil, being wound around the tooth jacket. In particular, several coils can be wound around one of the stator teeth and/or around one of the tooth shells.

In particular, the tooth surface can be electrically insulating, preferably consist at least partially of a plastic, particularly preferably be designed as an injection molded component.

In particular, the tooth casing can be releasably connected to the circuit board and/or the stator tooth and/or the stator base in a form-fitting and/or force-fitting and/or cohesive manner. In particular, the tooth casing can be connected to the circuit board and/or the stator tooth and/or the stator base by means of a clip connection and/or an insulation displacement connection or permanently, preferably by means of ultrasonic riveting and/or by means of thermal riveting.

This advantageous configuration results in a unit made up of coils and the circuit board and/or the stator base and/or the stator tooth, which is easy to assemble.

In particular, the tooth casing can have an integrated electrical line, the line being electrically connected to the coil. In particular, the line can be electrically connected to the circuit board, in particular by means of contact pins arranged on the tooth surface.

It can be preferred that the circuit board has at least one sensor, in particular a Hall sensor and/or an inertial sensor, for determining the rotor position and/or for determining the position of the drive device.

In particular, the inertial sensor for detecting the six possible kinematic degrees of freedom can have three mutually orthogonal acceleration sensors for detecting the translational movement and/or three orthogonal gyroscopic sensors for detecting rotating movements.

It can be preferred that the drive device has a control device for controlling the axial flow machine, in particular the currents conducted through the coils. It can also be preferred that at least one element of the control device is arranged on the circuit board.

In particular, the entire control device can be arranged on the circuit board.

In particular, the circuit board can have an extension in the axial direction of the axial flow machine of less than or equal to 1.6 mm, preferably less than or equal to 1 mm, particularly preferably less than or equal to 0.6 mm.

It can be preferred that the circuit board is in the form of a film circuit board.

In particular, the foil printed circuit board can have an extension in the axial direction of the axial flow machine of less than or equal to 0.3 mm, preferably less than or equal to 0.2 mm, particularly preferably less than or equal to 0.1 mm.

It can be preferred that the circuit board has a multilayer design, with the circuit board having at least one metal layer, preferably comprising copper and/or aluminum, and/or at least one plastic layer, in particular comprising fiber-reinforced plastic.

In particular, the circuit board can have a solid metal layer. This configuration is advantageous with regard to the achievable heat dissipation from the coils.

It can be preferred that the rotor has a plurality of permanent magnets. It can also be preferred that the ratio between the number of permanent magnets as a dividend and the number of coils is in a range between 1.2 and 1.4, particularly preferably 4/3, in particular 1.1, in particular 7/ 6 is.

In particular, the axial flow machine, in particular as a motor, can have a ratio of the maximum torque to the axial extent of the axial flow machine that is greater than 30 Nm/m, preferably greater than 100 Nm/m, especially ders is preferably greater than 200 Nm/m. The axial extent is parallel to the machine axis. In particular, this ratio can be greater than 50 Nm/m, preferably greater than 70 Nm/m, particularly preferably greater than 150 Nm/m. In particular, the axial flow machine can have a torque density, i.e. torque to motor volume, of greater than or equal to 6000 Nm/m^3, preferably greater than or equal to 15000 Nm/m^3 and particularly preferably greater than or equal to 20000 Nm/m^3 and/or have a torque constant of greater than or equal to 0.1 Nm/A, preferably greater than or equal to 0.2 Nm/A and particularly preferably greater than or equal to 0.3 Nm/A. This configuration of the axial flow machine enables a compact design of a transmission and small transmission ratios, while still enabling the door to be closed reliably. In this way, the drive device can also be of compact construction overall.

In particular, the axial flux machine in the configuration as an axial flux machine can have a ratio between the extension of at least one stator tooth in the axial direction of the axial flux machine as a dividend and the extension of the stator base in the axial direction of the axial flux machine, the ratio being greater than or equal to 2, in particular greater than or equal to 3, in particular greater than or equal to 4, in particular greater than or equal to 5, in particular greater than or equal to 6.

It can be preferred that the coils are divided into a plurality of conductive paths, preferably into two conductive paths, particularly preferably into three conductive paths, so that at least one of the conductive paths can be energized independently of at least one further conductive path.

In this way, the axial flow machine can be controlled in multiple phases. In particular, the axial flow machine can be controlled in two phases. In particular, the axial flow machine can be controlled in three phases. If one of the line paths fails, the axial flux machine can still generate torque. In particular, several coils can be energized by means of a conduction path. In particular, the same number of coils can be supplied with current from each individual line path. In particular, a single conductive path may be formed by a single electrical conductor, with the conductor forming multiple coils.

It can be preferable for at least one, in particular two or more, of the conductive paths to be arranged and/or electrically contacted on a first end face of the circuit board. It can also be preferred that at least one of the conduction paths is also arranged and/or electrically contacted on a second end face of the circuit board opposite the first end face.

In this way, the space on the circuit board is used optimally, in particular in such a way that the individual conduction paths are given more space on the circuit board to dissipate heat, thus preventing overheating.

In particular, the drive device can have a gear coupled to the axial flow machine. It can also be preferred that the gear mechanism is designed as a toothed wheel gear mechanism, particularly preferably as a multi-stage spur gear mechanism and/or as a planetary gear mechanism, or as an eccentric gear mechanism.

In particular, the transmission can include any type of transmission or combination of transmissions, in particular toothed wheel transmissions and/or friction wheel transmissions and/or belt transmissions and/or cable transmissions and/or chain transmissions.

As a planetary gear, the gear can have a sun gear that is non-rotatable with the rotor, in particular one piece, several planet gears fastened around the sun gear on a planet carrier, and a ring gear that meshes with the planets. In this case, the ring gear can be rotatably mounted and form the power output of the planetary gear, with the planetary carrier being designed to be stationary. Alternatively, the planet carrier can be rotatably mounted and form the power output of the planetary gear, with the ring gear being designed to be stationary. The terms planet and planet wheel are used synonymously.

As a planetary gear, the gear can also have at least one tungsten stage. In a preferred embodiment of such a tungsten stage, the planetary gear has a first gear stage and a second gear stage, the first gear stage comprising a sun gear, a plurality of first planets attached to a planet carrier and driven by the sun gear, and a first stationary ring gear, and the second gear stage second rotatable ring gear, second planets which are non-rotatable with the first planets, in particular one-piece planets, wherein the second planets drive the second ring gear. In particular, the second ring gear can form the power output of the planetary gear.

In particular, the gear can be designed as a combination of planetary gear and spur gear. The ring gear of the planetary gear can have external teeth and act as a spur gear. In particular, the ring gear can engage with a closer wheel of a closer module and/or an interface lenelement stand, and / or the ring gear can form the interface element.

In the case of the eccentric gear, it can be designed as a planetary eccentric gear and/or as a strain wave gear.

In particular, at least one transmission element of the transmission can be arranged coaxially to the axial flow machine. In particular, the rotor can be non-rotatably connected to the transmission element of the transmission, in particular to a sun gear of the transmission designed as a planetary gear.

In particular, the transmission can have a first transmission element non-rotatably connected to the rotor and a second transmission element, wherein the second transmission element is operatively connected to the first transmission element, in particular is engaged. In particular, an axis of rotation of the second transmission element can run in an installation space between the machine axis and an outer lateral surface of the rotor that is virtually extended in the axial direction of the machine, in particular parallel to the machine axis.

In particular, the rotor can be non-rotatably connected to a lever to form a connection of the drive device to the wing or to a frame.

A gear-free drive device is advantageous in this configuration, since the torque can be transmitted from the axial flow machine via the lever, in particular a linkage, in particular a scissor linkage, to the wing or the frame.

In particular, the drive device can be mounted either on the frame or on the sash. Within the meaning of the invention, the term frame also includes a door frame or window frame. In particular, the lever can be designed in such a way that a voltage supply for the axial flux machine and/or at least one control signal for the axial flux machine can be transmitted via the lever to the axial flux machine.

In particular, the drive device can have a closer module with at least one mechanical energy store and at least one translation element for translating a linear movement of the energy store into a rotary movement of the translation element. In particular, the drive device can have a drive module with a drive housing, the axial flow machine and/or a gear coupled to the axial flow machine being arranged in the drive housing.

In particular, the mechanical energy store can include one or more compression springs and/or tension springs, which are connected to the translation element via a link carriage to translate the linear movement of the energy store into a rotary movement of the translation element. The plate carriage is used to form an operative connection between a transmission element and the mechanical energy store of the closer module. The transmission element can be designed symmetrically or asymmetrically, in particular as a heart-shaped lifting cam.

In particular, the closer module can have a closer housing. In particular, the transmission element and/or a closer wheel can be arranged within the closer housing. The wording - inside the housing - means that the elements are arranged at least partially, in particular completely, in the space formed by the housing. In particular, an operative connection can be formed between the rotor and the energy store.

This configuration is advantageous with regard to the modularity of the drive device, ie the respective modules and/or elements that can be used and used separately from one another.

In particular, an output axis of an output shaft and the axis of rotation of the transmission element can run parallel to one another. On the one hand, the output shaft and the transmission element therefore do not rotate about the same axis of rotation and can be arranged in different positions, in particular in a modular manner. On the other hand, the parallel run reduces energy losses and facilitates assembly.

In particular, the drive device can have an interface element for forming an operative connection between the rotor and the energy store. In particular, the drive housing can include a first opening and the closer housing can include a second opening. In particular, the drive housing and the closer housing can be arranged relative to one another in such a way that the energy store and the rotor are in operative connection with one another through the first and the second opening by means of the interface element.

In particular, the interface element can be designed as at least one gear wheel. In particular, the interface element can have a plurality of gears.

In particular, the interface element can protrude into the drive housing and/or the closer housing. In particular, the interface element can be designed as at least one transmission element of the transmission. In particular, the interface element can be designed as a closer wheel, in particular a closer gear wheel. In particular, the closer wheel can be connected in a rotationally fixed manner to the transmission element, in particular in a form-fitting and/or force-fitting and/or cohesive manner, or can be formed in one piece.

In particular, the drive module and/or the closer module can be arranged at least partially, in particular completely, within a superordinate housing. In particular, the drive housing can be connected to the superordinate housing in a non-positive and/or positive and/or material connection. In particular, the closer housing can be connected to the superordinate housing in a force-fitting and/or positive and/or material-locking manner. In particular, one or more such connections can be implemented in the form of at least one screw connection and/or a pin connection and/or a press fit and/or a T-groove and/or a snap connection. In particular, the drive housing can be non-positively and/or positively and/or cohesively connected to the closer housing, preferably by means of at least one screw connection and/or a pin connection and/or a press fit and/or a T-slot and/or a snap connection.

In particular, the axial flow machine can be arranged at least partially in a space between the output shaft and the machine axis. In particular, the transmission can be arranged at least partially, in particular completely, in the installation space between the output axle and the machine axle, in particular a virtual extension of the machine axle. In particular, the output shaft can be arranged in a space between the machine axis and the energy store.

In this case, the installation space has a width, a height and a depth, the width being limited by a distance between the machine axis and the energy store. In particular, the height and/or the depth of the installation space can be limited by the drive housing or by the transmission or by the axial flow machine or by the energy store or by the closer housing.

In particular, the drive device can have a control module with a control device. In particular, the control module can be arranged at least partially, in particular completely, within the superordinate housing of the drive device.

In particular, the control module can be arranged on the closer module or within the drive housing.

In particular, the control module can include a control housing. In particular, the control module can be arranged entirely within the control housing. In particular, the control housing can be connected to the superordinate housing and/or to the drive housing and/or to the closer housing in a non-positive manner and/or with a form fit and/or with a material connection. In particular, one or more such connections can be implemented in the form of at least one screw connection and/or a pin connection and/or a press fit and/or a T-groove and/or a snap connection.

In particular, the drive housing can have one or more prefabricated receiving points for the positive and/or non-positive and/or material connection with the axial flow machine and/or the transmission and/or the output shaft. In particular, the closer housing can have one or more prefabricated receiving points for a positive and/or non-positive and/or material connection with the closer wheel and/or the transmission element and/or the axle body and/or the link plate carriage.

This configuration is advantageous with regard to a simple and easy-to-assemble design.

In particular, the drive device can have the transmission coupled to the axial flow machine, the transmission having a transmission ratio as the quotient of the speed of the rotor as a dividend and the speed of the transmission element, which is less than 125, preferably less than 100, particularly preferably less than 75

In particular, the drive device can be used in a rotary leaf drive and/or in a sliding door drive and/or in a revolving door drive.

In a rotary leaf drive, a leaf is pivoted from a closed position, in which the leaf rests against a frame or frame, to an open position about a leaf axis by means of the drive device, with the torque being transferred from the output shaft by means of a lever the drive device is transferred to the door or frame. The drive device can be mounted on the wing, in which case a running rail can be arranged on the frame, or on the frame, in which case a running rail can be arranged on the wing. In addition to the drive device, the swing leaf drive can also include the lever and/or the running rail and/or the leaf. In particular when used on fire protection leaves, the drive device can have a closer module. In the event of a fire, the closer module ensures that the fire protection leaf closes, in particular without manual operation.

In a sliding door drive, a wing is moved in a translatory manner along a running rail by means of the drive device, it being possible for the wing to be connected to a carriage running in the running rail. In addition to the drive device, the sliding door drive can have the leaf and/or the running rail and/or the carriage.

In a revolving door drive, two or more door leaves which are attached to a vertical central axis and rotate in a round rotary housing are rotated by means of the drive device. In addition to the drive device, the revolving door drive can have the rotary housing and/or the wings.

In particular, the drive device, preferably the axial flow machine and/or the transmission and/or the energy store, can be designed in such a way that the drive device, in particular by means of a machine torque, can be used to move the wing without manual force exerted by a person, in particular without a manual torque exerted by a person, which can be applied to the wing, in particular in a fully automated manner. However, the movement of the wing can be accelerated by the manual force exerted by the person, in particular the manual torque, on the wing.

The movement of the wing here means an opening movement and/or a closing movement of the wing.

Alternatively, the drive device, preferably the axial flow machine and/or the transmission and/or the energy store, can be designed as an auxiliary drive in such a way that the blade is only moved if at least at one point in time of the movement of the blade, in particular at the beginning of the movement, in addition to a force generated by means of the drive device, in particular a machine torque, a manual force exerted by a person, in particular a manual torque exerted by a person, is exerted on the wing.

• 1 ein Ausführungsbeispiel einer Antriebseinrichtung gemäß der Erfindung in einer schematischen Schnittdarstellung;
• 2 die Antriebseinrichtung aus 1 als Einzelheit in einer perspektivischen Ansicht;
• 3 ein Übersetzungselement als Einzelheit in einer Aufsicht,
• 4 ein weiteres Ausführungsbeispiel einer Antriebseinrichtung mit Planetengetriebe,
• 5 die Antriebseinrichtung aus 4 mit entferntem Umlaufrad,
• 6 eine Axialflussmaschine in prinzipieller Darstellung im Schnitt,
• 7 einen Stator der Axialflussmaschine aus 6 als Einzelheit,
• 8 eine Platine als Einzelheit in Aufsicht auf eine erste Stirnfläche, und
• 9 die Platine aus 8 in Aufsicht auf eine zur ersten Stirnfläche gegenüberliegenden Stirnfläche.

Further details and advantages of the invention are to be explained below with reference to the exemplary embodiments shown in the figures. Herein shows:

• 1 an embodiment of a drive device according to the invention in a schematic sectional view;
• 2 the drive unit off 1 as a detail in a perspective view;
• 3 a translation element as a detail in a supervision,
• 4 another embodiment of a drive device with planetary gear,
• 5 the drive unit off 4 with removed flywheel,
• 6 an axial flux machine in a schematic representation in section,
• 7 a stator of the axial flow machine 6 as a detail,
• 8th a circuit board as a detail in a plan view of a first face, and
• 9 the board off 8th in plan view of an end face opposite to the first end face.

In the different figures, the same parts are always provided with the same reference symbols, which is why they are usually only described once.

1 shows a drive device 1 for moving a wing. The drive device 1 has a drive module 3 . The drive module 3 has a drive housing 4, an electric machine 6 with a machine axis X1, and optionally a gear 7 with an output shaft 8 rotatably mounted about an output axis X2 for connection to a lever 9.

The drive device 1 also has a closer module 11 which has a closer housing 12 and a mechanical energy store 13 .

The drive device 1 has an interface element for forming an operative connection between the drive module 3 and the closer module 11 .

The transmission 7 has a transmission ratio as a quotient of the speed of the rotor as a dividend and the speed of the output shaft has, the transmission ratio being less than 125, preferably less than 100, particularly preferably less than 75.

The lever 9 is used to form a connection between the drive device 1 and the wing, ie with the exemplary door sash or window sash or with a frame, with the drive device 1 being mountable either on the frame or on the wing. Within the meaning of the invention, the term frame also includes a door frame or window frame. The lever 9 is designed in such a way that a power supply for the electrical machine 6 and/or at least one control signal for the electrical machine 6 can be transmitted via the lever 9 to the electrical machine 6 and/or a control module 26 . The lever 9 is guided in a rail 2, which in the illustrated embodiment 1 and 2 would be mounted on a frame not shown there.

The drive housing 4 has a first opening 16 , the closer housing 12 having a second opening 17 . As in 1 As can be seen, the drive housing 4 and the closer housing 12 are arranged in relation to one another in such a way that the closer module 11, in particular the energy store 13, and the transmission 7, in particular the output shaft 8, can pass through the first opening 16 and the second opening 17 by means of of the interface element are in operative connection with one another.

The drive module 3 and/or the closer module 11 is in each case arranged completely within a superordinate housing 5 . The drive housing 4 is connected to the superordinate housing 5 and/or to the closer housing 12 . The closer housing 12 is connected to the higher-level housing 5 . One or more such connections are designed, for example, in the form of at least one screw connection.

In the 1 and 2 it can be seen that the output axis X2 is parallel to the machine axis X1.

The closer module 11 has a translation element 18 for translating a linear movement of the energy store 13 into a rotational movement of the translation element 18 about an axis of rotation X3 of the translation element 18 . As exemplified in 1 The output axis X2 and the axis of rotation X3 of the transmission element 18 can be seen at a distance from one another, in particular and these run parallel to one another. The transmission element 18 is designed as a cam disk, specifically as a heart-shaped lifting cam disk, and is rotatably mounted with a closer wheel 10 in a rotationally fixed manner.

For example, the mechanical energy store 13 is designed as a compression spring. The compression spring is connected to the translation element 18 via a link carriage 27 in order to translate the linear movement of the mechanical energy store 13 into a rotary movement of the translation element 18 . The plate carriage 27 has sliding elements 21, which 2 are recognizable. The tab carriage 27 is in 4 recognizable.

The closer wheel 10 is arranged coaxially and non-rotatably with the translation element 18 for translating the linear movement of the energy store 13 into a rotational movement of the translation element 18 . The transmission 7 has a driven gear 22 which is coaxial with the driven shaft 8 and fixed in terms of rotation, the driven gear 22 being in engagement with the closer gear 10 . The output wheel 22 is designed as a gear wheel.

The interface element is in the embodiment to the 1 and 2 formed by the output gear 22.

For example, the drive housing 4 has a first wall 23 with an output opening 24 for the non-rotatable connection of the output shaft 8 to the lever 9, a second wall adjoining the first wall 23 and a third wall opposite the second wall, with the drive device 1 being designed in this way is to be attached to both the second wall and the third wall facing the wing, so to the exemplary door leaf. The same can apply to the closer housing 12 . The drive housing 4 but also the closer housing 12 can each be cuboid in order to enable assembly on both sides.

In 1 the control module 26, which has a control device, can also be seen. The control module 26 is arranged entirely inside the superordinate housing 5 of the drive device 1 .

3 shows a special embodiment, wherein the translation element 18 is designed as a cam, specifically as a heart-shaped lifting cam. As in 3 It can also be seen that a fixed axle body 19 is arranged, with the transmission element 18 and the closer wheel 10 being rotatably mounted on the axle body 19 .

In the 4 and 5 the drive device 1 is shown in a further embodiment, wherein the optional gear 7, in contrast to the embodiment to the 1 and 2 is designed as a planetary gear

As a planetary gear, the gear 7 has at least one tungsten stage. Such a tungsten stage has a first gear stage and a second gear stage. The first gear stage includes a sun gear, a plurality of first planets 32 fastened to a planet carrier and driven by the sun gear, and a first, stationary ring gear. The sun gear, the planet carrier and the first fixed ring gear are in the 4 and 5 not recognizable due to the selected cut. The second gear stage includes a second rotatable ring gear 33, second planets 31 which are non-rotatable with the first planets 32, in particular one-piece planets. The second planets 31 drive the second ring gear 33. The second ring gear 33 forms the power output of the planetary gear. In 5 the second ring gear is removed.

The transmission 7 according to the embodiment of the 4 and 5 is designed as a combination of planetary gear and spur gear. The second ring gear 33 of the planetary gear has external teeth 34 and acts as a spur gear. The second ring gear 33 is in engagement with the closer wheel 10 of the closer module 11. The closer wheel 10 forms in the embodiment to the 4 and 5 the interface element.

In the embodiment to the 4 and 5 the output axis X2 is coaxial to the machine axis X1.

In the exemplary embodiments described, the electrical machine 6 is designed as an axial flow machine.

The electric machine 6 is shown as a detail in 6 shown in principle. The electrical machine 6 has a stator 36 and a rotor 37 . The stator 36 is also in 7 shown as a detail and has a plate-shaped stator base 38 and a plurality of stator teeth 39 protruding from the stator base 38 in the axial direction of the electrical machine 6 . A coil 41 is arranged around each of the stator teeth 39 . Each stator tooth has an electrically insulating tooth jacket 45, the stator 36 having a plurality of coils 41 and each of the coils 41 being wound around the tooth jacket 45 and therefore indirectly around the stator tooth 39 via the tooth jacket. The stator teeth 39 pass through a circuit board 44 on which the coils 41 are contacted.

In 6 it can be seen that the stator 36 also includes a fixed bolt 50 , the bolt 50 having a bearing mount 46 for accommodating a roller bearing 47 . An example is in 6 a roller bearing 47 with balls 47' is shown. The bearing seat 46 has an annular bearing support surface 59 . The drive device 1 includes the roller bearing 47 for the rotatable mounting of the rotor 37 relative to the stator 36, the roller bearing 47 being accommodated on the bearing mount 46 of the bolt 50. The rotor 37 is rotatably mounted on the stator 36 by means of the roller bearing 47 . In an embodiment that is not shown, a bearing receptacle can be provided directly on the stator base, on which a roller bearing can be accommodated.

The rotor 37 includes a plurality of permanent magnets 48. Each permanent magnet 48 is plate-shaped. The rotor 37 has a rotor plate 49 in the form of a rotor disc. Furthermore, each permanent magnet 48 protrudes from the rotor plate 49 of the rotor 37 in the axial direction of the electrical machine, in particular in the direction of the stator 36 .

How best to 1 and 2 As can be seen, the gear 7 has a first gear element 42 which can be rotated coaxially with the machine axis X1 and which is connected to the rotor 37 in a torque-proof manner. The transmission 7 also has a second transmission element 43, which is operatively connected to the first transmission element 42, with an axis of rotation X4 of the second transmission element 43 in an installation space between the machine axis X1 and an outer lateral surface of the rotor that is virtually extended in the axial direction of the electric machine 6 37 and parallel to the machine axis X1.

In the embodiment to the 4 and 5 the first transmission element 42 is formed by the sun gear, with the second transmission element 43 being formed by the planet 31 .

In the 2 4 as well as 5 and 6, a circuit board 44 can also be seen, which is arranged in the installation space between the stator base 38 and the rotor 37. The circuit board 44 is arranged parallel to the stator base 38 . The circuit board 44 is arranged in a second plane parallel to the stator base 38 , the second plane being interrupted by each stator tooth 39 of the stator 36 . The board 44 is as a detail in the 8th and 9 shown.

In 8th a top view of a first face 51 of the circuit board 44 is shown. The first end face 51 is oriented in the direction of the stator 36 in the illustrated exemplary embodiments. In 9 a plan view of an end face 52 opposite the first end face 51 is shown.

The circuit board 44 has a number of breakthroughs corresponding to the number of stator teeth 39 Chen 53, which are penetrated by the stator teeth 39. The openings 53 correspond to the shape of the stator teeth 39. The circuit board 44 has a bearing opening 54 through which the roller bearing 47 passes. An element 55 of a control device for controlling the currents conducted through the coils 41 is arranged on the circuit board 44 . Line paths 56 are connected to the element 55 of the control device 55 . A bus connector 57 and contact openings 58 can also be seen. In this case, multiple line paths 56 are contacted on the first end face 51 of the circuit board 44 and multiple line paths 56 are contacted on the end face 52 opposite the first end face 51 . As a result, the installation space of the circuit board is optimally utilized. The two are in the image plane of 8th conductive paths 56 shown on the left are plated through by means of plated-through holes 56' on the opposite end face 52, as is also shown in 9 is recognizable.

Reference List

1

drive device

2

running rail

3

drive module

4

drive housing

5

parent housing

6

electric machine

7

transmission

8th

output shaft

9

lever

10

closer wheel

11

normally open module

12

normally open housing

13

mechanical energy storage

16

first opening in 4

17

second opening in 12

18

translation element

19

axle body

21

sliding elements

22

output gear of 7

23

first wall of 4

24

output opening

26

control module

27

strap carriage

31

planet

32

planet

33

ring gear

34

external teeth

36

stator

37

rotor

38

stator base

39

stator teeth

41

Kitchen sink

42

first gear element

43

second gear element

44

circuit board

45

tooth coat

46

stock pick-up

47

roller bearing

48

permanent magnet

49

rotor plate

50

bolt

51

first face

52

second face

53

breakthroughs

54

Stock Breakthrough

55

Element of a control device

56

conduction paths

57

bus connector

58

Contact Breakthrough

59

bearing surface

Claims (15)

Drive device (1) for moving a leaf, in particular a door leaf or a window leaf, with an electrical machine (6) comprising one, in particular single, stator (36), one, in particular single, rotor (37) rotatable about a machine axis (X1) and a plurality of coils (41) for forming a magnetic flux, the stator (36) having a stator base (38), in particular a plate-shaped one, characterized in that the electrical machine (6) is designed as an axial flux machine and is installed in a space between the A circuit board (44) is arranged on the stator base (38) and the rotor (37), at least one, in particular each, of the coils (41) being electrically connected to the circuit board (44). Drive device (1) after claim 1 , characterized in that the circuit board (44) is arranged parallel to the stator base (38). Drive device (1) after claim 1 or 2 , characterized in that the stator (36) has one, in particular plate-shaped, stator base (38) and a plurality of stator teeth (39) protruding from the stator base (38) in the axial direction of the electrical machine (6), the circuit board (44) in is arranged in a first plane, in particular parallel to the stator base (38), the first plane lying in an intermediate space between the stator teeth (39) and the rotor (37), preferably that the circuit board (44) rests on the stator teeth (39) rests. Drive device (1) after claim 1 or 2 , characterized in that the stator (36) has a plurality of stator teeth (39) protruding from the stator base (38) in the axial direction of the electrical machine (6), the circuit board (44) being in a second position, in particular relative to the stator base (38) parallel plane is arranged, wherein the second plane of at least one, in particular each stator tooth (39) of the stator (36) is broken. Drive device (1) after claim 4 , characterized in that the circuit board (44) has one or more openings (53), in particular the number of openings (53) corresponding to the number of stator teeth (39), through which the stator teeth (39) pass. Drive device (1) according to one of the preceding claims, characterized in that at least one, in particular each, coil (41) is integrated in or on the circuit board (44), in particular in the material of the circuit board (44). Drive device (1) according to one of the preceding claims, characterized in that the stator (36) has the, in particular plate-shaped, stator base (38) and a bearing mount (46) for accommodating a roller bearing (47) or a plain bearing, wherein in or on a roller bearing (47) or a plain bearing is accommodated in the bearing mount (46), the roller bearing (47) or the plain bearing reaching through a bearing opening (54) in the plate (44). Drive device (1) according to one of the preceding claims, characterized in that at least one of the coils (41), in particular each coil (41), is wound directly or indirectly around one of the stator teeth (39), preferably that at least one of the coils (41) is wound around a tooth casing (45), the tooth casing (45) at least partially surrounding the stator tooth (39), particularly preferably that the tooth casing (45) is attached to the plate (44) and/or to the stator tooth (39 ) and/or is fixed to the stator base (38) in a form-fitting and/or force-fitting and/or cohesive manner. Drive device (1) according to one of the preceding claims, characterized in that the circuit board (44) has at least one sensor, in particular a Hall sensor and/or an inertial sensor, for determining the rotor position and/or for determining the position of the drive device (1). Drive device (1) according to one of the preceding claims, characterized in that the drive device (1) has a control device for controlling the electrical machine (6), in particular the currents conducted through the coils (41), preferably that at least one element (55 ) of the control device is arranged on the circuit board (44). Drive device (1) according to one of the preceding claims, characterized in that the circuit board (44) is designed as a film circuit board. Drive device (1) according to one of the preceding claims, characterized in that the circuit board (44) has a multilayer design, the circuit board (44) having at least one metal layer, preferably comprising copper and/or aluminum, and/or at least one plastic layer, in particular comprising fiber-reinforced plastic. Drive device (1) according to one of the preceding claims, characterized in that the rotor (37) has a plurality of permanent magnets (48), preferably that the ratio between the number of permanent magnets (48) as a dividend and the number of coils (41) in one The range is between 1.2 and 1.4, particularly preferably 4/3. Drive device (1) according to one of the preceding claims, characterized in that the coils (41) are divided into a plurality of conductive paths (56), preferably into two conductive paths (56), particularly preferably into three conductive paths (56), so that at least one of the Line paths (56) can be energized independently of at least one further line path (56). Drive device (1) after Claim 14 , characterized in that at least one, in particular two or more, of the conduction paths (56) is arranged on a first end face (51) of the circuit board (44) and/or is electrically contacted, preferably that at least one of the conductive paths ( 56) is arranged and/or electrically contacted.

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